randomly got a check engine light. I drove the car for a while parked for a bit and when i got back in was just reversing slowly and the mil came on. My scan tool wouldn't read it so went to advance earlier and they said p0174 p0303 p0310 p0306 and p0300. I'm not sure if the misfire codes were just stored codes or new, my scan tool said the last time codes were cleared was 5,500 miles ago. I installed a new intake a couple weeks ago but have drove it a few hundred miles since then so I would think it would have set it off before now if they were a problem, i was worried it would run lean anyways with the setup i went with but it seemed fine ran a whole lot better after installing them, only issue i noticed was once or twice in a parking lot the rpms went up for no reason while sitting still. i would think it would be running lean on both banks if they were the issue, ill post a pic let me know if if anyone thinks its a little overkill and could be the problem. I'm planning on taking them off tomorrow and checking for any leaks. Anyone know if i need some kind of gasket in between the maf and housing on Carbonio intakes? would i be safe clearing the codes and driving it after i check for leaks or should i switch back to stock intakes for now. I was planning on getting a apr tune soon, would that help, is there a way to richen it up with the apr tune? And thoughts on the misfire codes? I don't have a vag com need to get one but the scan tool i do have should be able to monitor most sensors if someone can tell me what i need to be looking for. thanks.